Add cookie management commands to Rodney (PR inbound)

[simbo1905]

Summary

Please add first-class cookie management commands to Rodney. PR to follow created with Red/Green TDD and GPT5.4.

Cookie handling is a practical requirement for authenticated browser automation, and the --help / -h output for these commands should be treated as part of the public contract because Rodney is designed for CLI-driven agent use.

Proposed commands

rodney cookie set <name> <value> --domain <domain> [--path <path>] [--secure] [--http-only] [--same-site <mode>]
                                 Set a browser cookie for a domain
rodney cookie list              List cookies for the current page URL
rodney cookie get <name>        Print a cookie value for the current page URL
rodney cookie delete <name> --domain <domain> [--path <path>]
                                 Delete a browser cookie by domain/path

Command behavior

rodney cookie set

Sets a cookie in the running browser session.

Required inputs:

• cookie name
• cookie value
• --domain

Optional inputs:

• --path
• --secure
• --http-only
• --same-site <strict|lax|none>

Example:

rodney cookie set session abc123 --domain rodney.example.com
rodney cookie set prefs dark --domain rodney.example.com --path /app --http-only --same-site lax

rodney cookie list

Lists cookies that apply to the current page URL.

Expected output:

• one cookie per line
• readable CLI format
• suitable for shell use

Example:

rodney cookie list
session=abc123
prefs=dark

rodney cookie get

Prints the value for a named cookie that applies to the current page URL.

Expected behavior:

• print only the cookie value on success
• if the cookie is missing, fail cleanly with a non-zero exit status

Example:

rodney cookie get session
abc123

rodney cookie delete

Deletes a named cookie by domain, with optional path.

Expected behavior:

• require --domain
• default --path to /
• fail cleanly with a non-zero exit status if the cookie is not found

Example:

rodney cookie delete session --domain rodney.example.com
rodney cookie delete prefs --domain rodney.example.com --path /app

Help text requirement

The new commands should appear in the main rodney --help output in the same concise style as the existing commands. The help text should be sufficient for an agent to discover and use the feature without external explanation.

Why this matters

This fills an important gap for authenticated browser workflows while keeping Rodney in the same shell-friendly, composable style as the rest of the tool.